document.write( "Question 476457: Solve (x +1)(x -4) < 0 and express the solution set in set notation \n" ); document.write( "
Algebra.Com's Answer #331002 by lwsshak3(11628)\"\" \"About 
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Solve (x +1)(x -4) < 0 and express the solution set in set notation
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\n" ); document.write( "number line:
\n" ); document.write( "<....+.......-1....-.....4.....+.....>
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\n" ); document.write( "Interval notation: (-1, 4)
\n" ); document.write( "set notation: {x| -1 < x < 4}
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